Near/Far camera problem

Hi

I recently upgraded unity to 4.x to 5.4, which caused and still cause a lot of bugs/problems.

One of them is the camera. Before the upgrade, I had the near/far to 0.01/100 with 0 problem. Now if I have 0.01 in near's value my shadows are all buggy. I found the answer on a topic which was to increase the "near" option. It solves the shadow problem. But if I do that (even to 0.05) I can literally see through walls, so I'm lost and searching for a solution.

Thanks.